An ion rocket engine obtains thrust by firing out charged atoms (ions) at very high speeds. If 21.0 grams of propellant are ejected at a speed of 0.0131% the speed of light (c = 3x108 m/s) every second, what would be the acceleration on the 820 kg rocket?

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it